I do apologize for the problem you are running into, unfortunately we would need some more information to see what exactly is going on. What is the problem you are running into exactly? Please let me know and I would be happy to help further.

info [whostmgr5] Stale lock file: /var/cpanel/reseller-limits.yaml.lock. Age is 224 (mtime=1253877268) which is longer then waittime (60)
Out of memory during request for 1012 bytes, total sbrk() is 419973120 bytes!